WO2020124693A1

WO2020124693A1 - Oled pixel structure

Info

Publication number: WO2020124693A1
Application number: PCT/CN2019/070269
Authority: WO
Inventors: 王�义
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2018-12-18
Filing date: 2019-01-03
Publication date: 2020-06-25
Also published as: CN109671759A

Abstract

An OLED pixel structure, comprising a first subpixel group arranged along a first pixel row, a second subpixel group arranged alternately with the first subpixel group and arranged along the first pixel row, and a third subpixel group arranged along a second pixel row. The first subpixel group comprises at least two first subpixels, the second subpixel group comprises at least two second subpixels, the third subpixel group comprises at least a third subpixel, and each third subpixel is adjacent to a first subpixel and a second subpixel.

Description

OLED pixel structure

Technical field

The invention relates to the field of display technology, in particular to an OLED pixel structure.

Background technique

An OLED (Organic Light-Emitting Diode) display panel includes multiple pixels, and each pixel includes three sub-pixels of red, green, and blue. The organic light-emitting materials of the three seed pixels are different. During the manufacturing process, three different organic materials must be vapor-deposited on the corresponding positions of the red, green and blue sub-pixels through the metal mask, corresponding to the sub-pixels of the same color The metal mask requires a set of openings, and then adjusts the mixing ratio of the three color combinations to produce true colors.

With the development of display technology, people have higher and higher requirements on the resolution and brightness of the display screen. For high-resolution display panels, due to the increased resolution requirements, the distance between the sub-pixel light-emitting areas The smaller, however, limited by the manufacturing process of the metal mask, it is impossible to obtain a higher pixel density (pixels per inch). Reducing the spacing between the red, green, and blue sub-pixels will cause the sub-pixels of different colors to mix during the evaporation of the sub-pixels, which will affect the display of the screen. Therefore, the resolution of the OLED panel in the prior art needs to be improved.

technical problem

The present invention provides an OLED pixel structure to solve the existing pixel structure. Since the resolution is improved by reducing the spacing between the red, green, and blue sub-pixels, sub-pixels of different colors are caused when the sub-pixels are evaporated. Pixels are mixed, which affects the display effect of the picture.

Technical solution

To solve the above problems, the technical solutions provided by the present invention are as follows:

The present invention provides an OLED pixel structure, including: a first sub-pixel group arranged along a first pixel row, a second sub-pixel group arranged alternately along the first pixel row and the first sub-pixel group, along the first A third sub-pixel group arranged in a two-pixel row; the first sub-pixel group includes at least two first sub-pixels spaced apart and adjacent, and the second sub-pixel group includes at least two second sub-pixels spaced apart Sub-pixels, the third sub-pixel group includes at least one third sub-pixel; wherein the first pixel row and the second pixel row are alternately arranged, each of the third sub-pixels and one of the first The sub-pixel is adjacent to one of the second sub-pixels; both the first sub-pixel and the second sub-pixel are diamond-shaped, and the third sub-pixel is circular; in the pixel row direction, the third sub-pixel The pixel group is arranged in a misalignment with the first sub-pixel group and the second sub-pixel group.

In at least one embodiment of the present invention, the first subpixel group and the second subpixel group are arranged along a first pixel column, and the third subpixel group is arranged along a second pixel column, the first One pixel column and the second pixel column are alternately arranged.

In at least one embodiment of the present invention, in the same first pixel row, the center line between the adjacent first sub-pixel group and the second sub-pixel group and the second pixel column coincide.

In at least one embodiment of the present invention, the first sub-pixel group includes four first sub-pixels, and the four first sub-pixels are arranged in a square matrix.

In at least one embodiment of the present invention, the second sub-pixel group includes four second sub-pixels, and the four second sub-pixels are arranged in a square matrix.

In at least one embodiment of the present invention, the third sub-pixel group includes two third sub-pixels distributed adjacent to each other, and the two third sub-pixels are arranged in pixel columns.

In at least one embodiment of the present invention, the structure of the second sub-pixel group is the same as the structure of the first sub-pixel group.

In at least one embodiment of the present invention, the first subpixel, the second subpixel, and the third subpixel are a red subpixel, a blue subpixel, and a green subpixel, respectively.

The present invention also provides another OLED pixel structure, including: a first sub-pixel group, a second sub-pixel group, and a third sub-pixel group; the first sub-pixel group is arranged along a first pixel row, and the first The sub-pixel group includes at least two first sub-pixels arranged adjacent to each other at intervals; the second sub-pixel group is alternately arranged with the first sub-pixel group along the first pixel row, and the second sub-pixel group includes At least two second sub-pixels distributed adjacent to each other; the third sub-pixel group is arranged along the second pixel row and includes at least one third sub-pixel; wherein, the first pixel row and the second pixel row Alternately arranged, each of the third sub-pixels is adjacent to a first sub-pixel and a second sub-pixel.

In at least one embodiment of the present invention, in the pixel row direction, the third subpixel group is arranged in a misalignment with the first subpixel group and the second subpixel group.

In at least one embodiment of the present invention, the third sub-pixel group includes two third sub-pixels distributed at intervals, and the two third sub-pixels are arranged in pixel columns.

In at least one embodiment of the present invention, the first sub-pixel and the second sub-pixel are both diamond-shaped, and the third sub-pixel is circular.

Beneficial effect

The beneficial effects of the present invention are: the present invention reduces the pixel size by changing the arrangement structure of the OLED pixels, thereby obtaining a higher pixel density, thereby improving the resolution of the panel; at the same time, it also increases the distance between sub-pixels of different colors, Helps reduce color mixing.

BRIEF DESCRIPTION

In order to more clearly explain the embodiments or the technical solutions in the prior art, the following will briefly introduce the drawings required in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only inventions. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

1 is a schematic diagram of an OLED pixel structure according to Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of an OLED pixel structure according to Embodiment 2 of the present invention.

Embodiments of the invention

The descriptions of the following embodiments refer to additional drawings to illustrate specific embodiments that can be implemented by the present invention. Directional terms mentioned in the present invention, such as [upper], [lower], [front], [back], [left], [right], [inner], [outer], [side], etc., are for reference only Attach the direction of the schema. Therefore, the directional terminology is used to illustrate and understand the present invention, not to limit the present invention. In the figure, units with similar structures are indicated by the same reference numerals.

The present invention is directed to the existing OLED pixel structure. As the resolution of the display is improved by reducing the spacing between the three sub-pixels of red, green, and blue, color mixing will occur between sub-pixels of different colors when the sub-pixels are evaporated. This further affects the technical problem of display, and this embodiment can solve this defect.

Example one

As shown in FIG. 1, the invention provides an OLED pixel structure 100 including a first sub-pixel group 10, a second sub-pixel group 20, and a third sub-pixel group 30, the first sub-pixel group 10 and the first The second sub-pixel groups 20 are alternately arranged along the first pixel row M, the third sub-pixel groups 30 are alternately arranged along the second pixel row N, and the first pixel row M and the second pixel row N are alternately arranged.

Wherein, the first sub-pixel group 10 includes at least two first sub-pixels 11 spaced adjacent to each other, the second sub-pixel group 20 includes at least two second sub-pixels 21 spaced apart, and the third The sub-pixel group 30 includes at least one third sub-pixel 31.

Each third sub-pixel 31 is adjacent to one first sub-pixel 11 and one second sub-pixel 21, one adjacent first sub-pixel 11 and one second sub-pixel 21 and one third sub-pixel 31 constitute one pixel.

In the pixel row direction, the third sub-pixel group 30 is arranged in a misalignment with the first sub-pixel group 10 and the second sub-pixel group 20.

In the pixel column direction, the first sub-pixel group 10 and the second sub-pixel group 20 are arranged along the first pixel column I, and the third sub-pixel group is arranged along the second pixel column J, the first The pixel columns and the second pixel columns are alternately arranged, and the pixel row direction is perpendicular to the pixel column direction.

In other embodiments, in the same first sub-pixel column I, the first sub-pixel group 10 and the second sub-pixel group 20 may be alternately arranged, and the first sub-pixel group in this embodiment 10 and the second subpixel group 20 are not alternately arranged in the first subpixel column I.

In the same pixel row M, the center line between the adjacent first sub-pixel group 10 and the second sub-pixel group 20 coincides with the second pixel column J, that is, the adjacent A column of the third sub-pixel group 30 is correspondingly distributed on the center line between the first sub-pixel group 10 and the second sub-pixel group 20.

In this embodiment, the first sub-pixel group 10 includes two of the first sub-pixels 11, and the two first sub-pixels 11 are arranged along the pixel column direction.

The second sub-pixel group 20 includes two of the second sub-pixels 21, and the two second sub-pixels 21 are arranged along the pixel column direction.

The third sub-pixel group 30 includes two of the third sub-pixels 31, and the two third sub-pixels 31 are arranged along the pixel column direction.

The center of the adjacent one of the first sub-pixel 11, the center of the second sub-pixel 21 and the center of the third sub-pixel 31 form an isosceles triangle.

The first sub-pixel 11 is diamond-shaped, the two diagonal lines of the first sub-pixel 11 are respectively the same as the pixel row direction and the pixel column direction, the first sub-pixel 11 is a red sub-pixel; the second sub-pixel The pixel 21 has a rhombic shape, the two diagonal lines of the second sub-pixel 21 are the same as the pixel row direction and the pixel column direction, the second sub-pixel 21 is a green sub-pixel; the third sub-pixel 31 is a circle The third sub-pixel 31 is a blue sub-pixel; with this shape design and distribution method, the distance between sub-pixels of different colors can be increased as much as possible to reduce color mixing.

The structures of the first sub-pixel group 10 and the second sub-pixel group 20 may be the same, so as to facilitate vapor deposition with the same metal mask, and the third sub-pixel group 30 is vapor deposited with another metal mask .

Example 2

As shown in FIG. 2, different from the first embodiment, the first sub-pixel group 10 in this embodiment includes four first sub-pixels 11 spaced adjacent to each other, and the second sub-pixel group 20 includes Four second sub-pixels 21 spaced adjacent to each other.

In the same first sub-pixel column I, the first sub-pixel group 10 and the second sub-pixel group 20 in this embodiment are alternately arranged.

The structure of the first sub-pixel group 10 may be the same as the structure of the second sub-pixel group 20, and vapor deposition may be performed using the same mask.

The four first sub-pixels 11 in the first sub-pixel group 10 are arranged in a square matrix, and the four second sub-pixels 21 in the second sub-pixel group 20 are arranged in a square matrix.

The other structures are the same as those in the first embodiment. For details, refer to the first embodiment, and details are not described here.

Beneficial effect: In the present invention, by changing the arrangement structure of OLED pixels, the pixel size is reduced to obtain a higher pixel density, thereby improving the resolution of the panel; at the same time, it also increases the distance between sub-pixels of different colors, which is beneficial to reduce color mixing .

In summary, although the present invention has been disclosed as the above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various changes without departing from the spirit and scope of the present invention. Such changes and retouching, therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims

An OLED pixel structure, including:

The first sub-pixel group, arranged along the first pixel row, includes at least two first sub-pixels distributed adjacently at intervals;

The second sub-pixel group is alternately arranged with the first sub-pixel group along the first pixel row, and includes at least two second sub-pixels distributed adjacently at intervals;

The third sub-pixel group, arranged along the second pixel row, includes at least one third sub-pixel; wherein, the first pixel row and the second pixel row are alternately arranged, each of the third sub-pixels and a The first sub-pixel is adjacent to a second sub-pixel;

The first sub-pixel and the second sub-pixel are both diamond-shaped, and the third sub-pixel is circular;

In the pixel row direction, the third sub-pixel group is arranged in a misalignment with the first sub-pixel group and the second sub-pixel group.
The OLED pixel structure of claim 1, wherein the first sub-pixel group and the second sub-pixel group are arranged along a first pixel column, and the third sub-pixel group is arranged along a second pixel column, so The first pixel column and the second pixel column are alternately arranged.
The OLED pixel structure according to claim 2, wherein, in the same first pixel row, the center line between the adjacent first sub-pixel group and the second sub-pixel group is the same as the second The pixel columns coincide.
The OLED pixel structure of claim 1, wherein the first sub-pixel group includes four first sub-pixels, and the four first sub-pixels are arranged in a square matrix.
The OLED pixel structure according to claim 4, wherein the second sub-pixel group includes four second sub-pixels, and the four second sub-pixels are arranged in a square matrix.
The OLED pixel structure according to claim 5, wherein the third sub-pixel group includes two third sub-pixels distributed adjacent to each other, and the two third sub-pixels are arranged in pixel columns.
The OLED pixel structure according to claim 5, wherein the structure of the second sub-pixel group is the same as the structure of the first sub-pixel group.
The OLED pixel structure of claim 1, wherein the first subpixel, the second subpixel, and the third subpixel are a red subpixel, a blue subpixel, and a green subpixel, respectively.
An OLED pixel structure, including:

The first sub-pixel group, arranged along the first pixel row, includes at least two first sub-pixels distributed adjacently at intervals;

The second sub-pixel group is alternately arranged with the first sub-pixel group along the first pixel row, and includes at least two second sub-pixels distributed adjacently at intervals;

The third sub-pixel group, arranged along the second pixel row, includes at least one third sub-pixel; wherein, the first pixel row and the second pixel row are alternately arranged, each of the third sub-pixels and a The first sub-pixel is adjacent to a second sub-pixel.
The OLED pixel structure of claim 9, wherein, in the pixel row direction, the third sub-pixel group is arranged in a misalignment with the first sub-pixel group and the second sub-pixel group.
The OLED pixel structure of claim 10, wherein the first sub-pixel group and the second sub-pixel group are arranged along a first pixel column, and the third sub-pixel group is arranged along a second pixel column, so The first pixel column and the second pixel column are alternately arranged.
The OLED pixel structure according to claim 11, wherein, in the same first pixel row, the center line between the adjacent first sub-pixel group and the second sub-pixel group is the same as the second The pixel columns coincide.
The OLED pixel structure of claim 10, wherein the first sub-pixel group includes four first sub-pixels, and the four first sub-pixels are arranged in a square matrix.
The OLED pixel structure according to claim 13, wherein the second sub-pixel group includes four second sub-pixels, and the four second sub-pixels are arranged in a square matrix.
The OLED pixel structure according to claim 14, wherein the third sub-pixel group includes two third sub-pixels distributed adjacent to each other, and the two third sub-pixels are arranged in pixel columns.
The OLED pixel structure of claim 14, wherein the structure of the second sub-pixel group is the same as the structure of the first sub-pixel group.
The OLED pixel structure of claim 9, wherein the first subpixel, the second subpixel, and the third subpixel are a red subpixel, a blue subpixel, and a green subpixel, respectively.
The OLED pixel structure of claim 9, wherein the first sub-pixel and the second sub-pixel are both diamond-shaped, and the third sub-pixel is circular.